Tutorials on unlocking skins are shown here. You can discuss in the comments which skins you like best.
There are also wars between different skin types. For example, a green-purple (4chan) skin will almost always try to kill a Reddit skin. Just a little tip ;)

Slitherio.org is about game tactics, tips & tricks. This helps you to get started in the game, but also how to advance, kill others, grow, hunt, and increase your rank. Maybe at last, you will get to the leaderboard? Who knows, it’s up to you. But the guides in this category will greatly help you. In the comments you can discuss tactics with the fellow readers, and tell them which worked best for you. The tactics are written by people who are very good at the game, so don’t worry!

This Website is about slither.io private servers and their development. Coders will need to write their own server software for slither.io servers to create their own private servers. How this is all done, how you can join private servers, what the disadvantages and advantages are and the different gamemodes this has to offer, you can or will be able to read in this category, so stay tuned!

In this category, clones of the slither.io game are shown. Much like with agar.io, clones will start to show up. Are they better, or worse? You will read it here. You can also read a little bit about the slither.io source code here, and maybe you will be able to make your own modifications or clones of slither.io!